%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-3-25 on page I-351 in "When to use and when not to use paracol".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.0pt}
\addtolength\textwidth{-10pt}
%StartShownPreambleCommands
\usepackage{parallel,lineno}
\linenumbers \modulolinenumbers[2]
\setlength\linenumbersep{1pt}
%StopShownPreambleCommands

\begin{document}
\begin{Parallel}{.45\linewidth}{}
\raggedright  \setlength\leftskip{10pt}
              \setlength\parindent{-\leftskip}
\ParallelLText{I just go online and download an update.}
\ParallelRText{Ich geh mal eben auf den Strich und lade
  mir ein Auffrisch herunter.} \ParallelPar
\ParallelLText{Microsoft Office on floppy disks.}
\ParallelRText{Kleinweich Büro auf Schlabberscheiben.}
\ParallelPar
\end{Parallel}
\end{document}
